linux-kernel - Re: [PATCH] block: reorder request_queue to remove 64 bit alignment padding

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Message-ID: <CAOS58YOXtoVwNc2NOWvrzhBMb0gTRyRCz3KBXFoC2s9-U3mFXA@mail.gmail.com>
Date:	Wed, 13 Jul 2011 11:20:49 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Richard Kennedy <richard@....demon.co.uk>
Cc:	Jens Axboe <jaxboe@...ionio.com>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] block: reorder request_queue to remove 64 bit alignment padding

Hello,

On Mon, Jul 11, 2011 at 4:19 PM, Richard Kennedy
<richard@....demon.co.uk> wrote:
> Reorder request_queue to remove 16 bytes of alignment padding in 64 bit
> builds.
>
> On my config this shrinks the size of this structure from 1608 to 1592
> bytes and therefore needs one fewer cachelines.
>
> Also trivially move the open bracket { to be on the same line as the
> structure name to make it easier to grep.
>
>
> Signed-off-by: Richard Kennedy <richard@....demon.co.uk>

Acked-by: Tejun Heo <tj@...nel.org>

Thank you.

-- 
tejun
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